Portable speaker



FIG. 1 is a top, front and side perspective view of a portable speakerembodying my new design.

FIG. 2 is a bottom, front and side perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a back view thereof.

FIG. 5 is a top view thereof

FIG. 6 is a bottom view thereof.

FIG. 7 is a first side view thereof; and,

FIG. 8 is a second side view thereof.

Broken lines are used to illustrate features of the portable speakerwhich form no part of the claimed design.

CLAIM The ornamental design for a portable speaker, as shown anddescribed.